Re: Re: HYB: Rebloom Inheritance

In a message dated 10/27/2007 6:19:32 A.M. Central Daylight Time,  
lmann@lock-net.com writes:

<<"The reblooming trait, however, is firmly established in the  lines of 
current hybridizers, with many reporting rebloom from 50 to 80 %  of 
progeny from crosses of two reblooming parents.">

Which makes  me wonder what about the others (not the "many") and why 
such a wide  range.>>
 
Linda, 
 
The wide range probably comes from the varying power of the genetic package  
each reblooming parent carries.  Apparently, we don't know how many rebloom  
genes exit?  Also, we don't know how many modifiers exist or what triggers  
them?  Not all, anyway.  
 
Therefore, when I use two reblooming parents, there is no way I can tell  
exactly what is going into the seedlings.  In my case, I often make several  
different types of crosses.  In 2006 the crosses generally broke down into  three 
categories.
 
1) strong rebloom x strong rebloom.  Example: Star Gate x Matrix   (24 
planted, more in pots) 
 
In # 1. . .  I would expect a high percentage of rebloom.  But  experience 
tells me, it's unlikely the rebloom will be anywhere near  100%.  Also expect 
high % of plicata based on the plicata influence from  Violet Miracle.  Will I 
be right or wrong?  Can't wait to see!  
 
Innocent Star x Rebound gave 71% on a small number of seed.  Seven  survivors 
with five rebloomers.  This surprised me.  
 
2) sporadic/carrier rebloom x strong rebloom.  Example: Rio x  Matrix  (can 
also be Sincerely Yours x Star Gate) 
 
In # 2  . . . I expect an occasional rebloomer and can get up to 10%  with 
varying degrees of rebloom intensity.  Primarily, this seems to depend  on how 
strong the rebloom is in the parents, but the genes can be carried  without 
being expressed in the parent.  (Sincerely Yours x Star  Gate.)  I always hope 
the 10% matches up with the prettiest or most  interesting ones!  <vbg>  
 
3) gene combining or seedling x seedling.  Example:  red seedling  x red 
seedling
 
In # 3 . . . since my seedlings have a high % of rebloom ancestors,  anything 
is possible.  It's always a surprise.  The ones I'm watching  closest in this 
group are (reblooming seedlings from Regimen/Ritual X  Tara's Choice) X 
1901(0626-1Re X Winesap)    Contains Her Royal  Highness, Inferno, Gallant Moment, 
Feed Back (2) and either Regimen or  Ritual.  I'm leaning toward Regimen.  
Great looking plants with good  increase!  <vbg>  Both parents have either 
rebloomed themselves  or have siblings that do.  Many seedlings from this group 
weren't planted  due to space.  
 
At this point, I have no way of telling what genes a plant will pass on, or  
what modifiers exist or in what quantity.  However, I'm getting better at  
predicting!  Next spring should answer a lot of MY questions.  And the  summer 
that follows should answer even more.  But learning is 75% of the  fun!  Or is 
that 95%?  Anyone know?  <vbg>  
 


 
________________________________________________________
Betty W.  in South-central KY Zone 6 ---If you don't cross them, you can't 
plant them!  
Bridge In Time Iris Garden@website:
Some seedlings planted and some still  in the pots! 
_www.thegardensite.com/irises/bridgeintime/_ 
(http://www.thegardensite.com/irises/bridgeintime/) 
_Reblooming Iris - Home Page_ (http://www.rebloomingiris.com/)  
_iris-photos archives_ (http://www.hort.net/lists/iris-photos/)  
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